Centrifugal liquid-separator.



No. 741,342. Y PATBNTED 00T. 13', 190s.

L. HOYT. GENTRIFUGAL LIQUID SEPARATOR.

` PPPPPP AT1 OOOOOOOO AR.25.1903. no MODEL.

2715.1 IM, l I ,L

v C d PATENTED DCT. 13, 1903.

M. L. HOYT. CENTRIFUGAL LIQUID SEPARATOR.

APPLICATION FILED MAR. 25, 1903.

2 SHEETS-SHEBT 2 N0 MODEL.

ivo. micia.

Patented october 13, 196e.

'Parent trios..

MATTHEW L. I-IOYT, OF LITTLEFALLS, NEW YORK, ASSGNOR TO D.. Il. BURRELL dv COMPANY, OF LITTLEFALLS, NEW YORK.

CENTRIFUGA LIQUIDFSEPARATOR.

SPECIFICATION forming part of Letters Patent No. 741,342, dated October 13, 1903i.

Application filed March 25, 1903. Serial No. 149,528. (No model.)

d'0 @ZZ whom t may concern:

Be it known that I, MATTHEW L. Hovr, a citizen of the United States, and a resident of Littlefalls, in the county of Herkimer and State of New York, have invented a new and useful Improvement in Centrifugal Liquid- Separators, of which the following is a speciication.

This invention relates tothe means for discharging the separated liquidsw-for instance,

cream and skim-milk-from the rotating bowl in which the separation is effected, and has particular reference to that class of discharge devices which consist of an internal skimming-shield arranged within or underneath the cover of the bowl, as distinguished from discharge devices in which skim-milk -discharge pipes are used.

The objects of this invention are to produce a skimming-shield which is simple and compact, which causes a close separation of the cream and skim-milk, which is snugly arranged within the cover and forms a convenient support for the packing-rin g which is applied to the joint between the body and cover of the bowl, and which has other advantages.

In the accompanying drawings, consisting of two sheets, Figure 1 is a vertical section of a bowl of a centrifugal creamer embodying this invention. Fig. 2 is a detached top plan view of the skimming-shield on an enlarged scale. Fig. 3 is a horizontal section through the neck of the skimming-shield on a level with the creamscrew in line 3 3, Fig. 5. Fig. l is a similar horizontal section on a level with the skim-milk-discharge openings in line i 4, Fig. 5. Fig. 5 is a vertical section of the skimming-shield in line 5 5, Fig. 2, viewed in the direction of the arrow. Fig. 6 is a similar vertical section in line 6 6, Fig. 4:. Fig. 7 is a fragmentary vertical section, on an enlarged scale, of the base of the skimmingshield and the adjacent parts ofthe bowl and cover. Fig. 8 is a detached side elevation of the skimming-shield. Fig. 9 is a fragmentary enlarged vertical section through one of the cream-discharge oriiices in the top of the neck of the shield in line 9 9, Fig. 2. Fig. lO

is a fragmentary sectional elevation through the bowl and shield in line 10 l0, Fig. 3.

Like letters of reference refer to like parts in the several iigures.

A represents the body of the bowl of a Creamer or other centrifugal liquid-separator, which may be of any suitable form or construction.

Bis the detachable top or cover of the bowl, which tapers upwardly to the usual cylindrical neck l). The cover is provided at its base with a downwardly-projecting collar c, which is screw-threaded internally and is screwed upon the externally-threaded top d of the body of the bowl.

E represents the skimming-shield, which is arranged within the cover and corresponds in its lower portion to the tapering or conical form of the cover. The base of the shield is provided with a circumferential fiange c, having an external concave face or seat e, on which is seated the rubber packingring f, which covers the inner side of the joint between the top of the body and the cover. The base of the shield rests upon an internal offset g, Fig. 7, near the top of the body, and the base of the cover bears upon the base flange of the shield and the packing-ring. The conical lower portion or body of the shield is arranged at a sufficient distance below the tapering main portion of the cover to form a narrow but ample flow-space for the skims milk between the cover and the shield. The skimmilk enters this flowspace through notches 7i, formed in the upper side of the baseeflange c. The packing-ring extends over these notches and the skim-milk passes upwardly through these notches below this packing-ring, as indicated in Fig. '7. The skimmingshield is provided with an upwardly-extending cylindrical neck H, which fits snugly in the neck l) of the cover and extends above the same, as shown in Fig. l. At the base of the neck the shield is provided with an external shoulder 7U, which bears against the under side of the cover, adjacent to the neck l) thereof. The conical lower por tion of the shield is provided on its outer side with several radial ribs t', four being shown, which extend from the shoulder 7i downwardly to the base-nange c and are preferably of slightly-less depth than the space between the cover and shield, as shown in Fig. l0.

. Z of the neck.

These ribs control the movement of the skimmilk in a circumferential direction and compel the skim-milk to reduce its speed as it flows from theA zone of greatest radius and speed, at the base of the shield, upwardly and inwardly to the zone at the base of the neck, in which the radius and speed are much smaller. The `shield is provided at the base of the neck with an inwardly-projecting annularflange K, which extends inwardly beyond the cream-zone and is provided with a radial notch 7c, Figs. l to 5, through which the cream flows upwardly into the neck of the shield. The outer portion of this creamslot is obstructed by an adjusting-screw 7c', which extends to the outer side of the neck, so that it can be readily adjusted. The inner end of this screw controls the distance from the axis of rotation at which the cream is allowed to escape and the position of the cream-discharge with reference to the skimmilk discharge. This cream-notch is arranged between two upright ribs L, formed on the inner side of the neck of the shield and extending from the lower annular flange K to the annular top flange l of the neck. These iianges form an upright channel which confines the cream as it iiows upwardly through the neck and directs the cream to the delivery-orifices Z/, formed between these ribs in the top iiange The skim-milk passes from the iiow-space on the outer side of the lower portion of the shield into the neck at the lower end of the latter by openings m, which are formed in the neck of the shield outside of the cream-confining ribs L. The skim-milk flows upwardly through the neck until it reaches the delivery-openings n, which are formed in the neck of the shield above the neck Z) of the cover. The construction of the shield and its passages by which the skim-milk and cream or other separated liquids are both caused to iiow into the neck of the shield and discharged from the inner side thereof places the discharge-levels 0f the two separated liquids very closely together. This is not the .case in other devices of this general character in which the cream or light liquid passes into the neck of the shield and the skim-milk onheavy liquid remains on the outer side of the neck, because in the last-mentioned structures the thickness of the metal of the neck always lies between the discharge-levels of the 'two separated liquids. The improved construction herein described therefore admits of a very close relative location and adjustment of the cream and skim-milk discharges, whereby the efficiency of the machine in skimming the milk is considerably increased. The shield removes the skim-milk from the bowl at numerous points circumferentially around the top of the body of the bowl, whereby cross-currents in the liquid are prevented, and it effectually controls the speed of the skim-milk as the latter passes from the Zone of the greatest radius and speed to zones of lower radii and speeds. The shield can be readily removed from the cover forl cleaning,

and all of itsparts and passages are readily accessible for that purpose. The shield also forms a convenient and firm support for the packing-ring, and the arrangement of the latter on the base of the shield permits the top of the bowl to be made comparatively narrow and light, whereby the construction of the bowl is simplified and the cost of manufacture is reduced.

I claim as my inventionl. The combination of a centrifugal liquidseparator bowl and a skimming-shield arranged within the bowl, said shield having passages for the delivery of the light and heavy separated liquids from the interior of the shield, a passage through which the heavy separated liquid passes from the exterior of the shield to the interior thereof, and means for keeping the separated liquids separate within the shield. 2. The combination of a centrifugal liquidseparator bowl having a contracted neck and a skimming-shield within the bowl, having a neck arranged within the vneck of the bowl, said shield having passages for the delivery of the light and heavy separated liquids from the interior of the neck of the shield, a passage through which the heavy separated liquid passes from the exterior of the shield to the interior of the neck thereof, and means for keeping the separated liquids separate in the neck of the shield.

3. The combination of a centrifugal liquidseparator bowl having a contracted neck and a skimming-shield within the bowl, having a neck arranged within the neck of the bowl, said shield having a passage for the upward flow of the light liquid in the lower portion of the neck, internal upright ribs above said passage and on opposite sides thereof, a delivery-passage for the light liquid between said ribs in the upper portion of the neck, and a passage for the heavy liquid leading from the exterior of the shield into the neck thereof outside of said ribs.

4. The combination of a centrifu gal liquidseparator bowl having a contracted neck and a skimming-shield within the bowl, having a neck arranged within the neck of the bowl, said shield having in its neck an annular baseflange provided with a cream-discharge passage, a cream-delivery passage above said discharge-passage, upright ribs on opposite sides of said passages, and a skim-milk passage leading from the exterior of the shield to the interior of its neck outside of said ribs.

5. The combination of a centrifugal liquidseparator bowl having a contracted neck and a skimming-shield within the bowl, having a neck arranged within the neck'of the bowl, said shield having on the inner side of its neck a cream-channel extending upwardly, a How-space for the skim-milk outside of said channel, and a passage through which the skim-milk enters said internal flow-space from the exterior of the shield.

IOC

IIO

6. The combination of a centrifugal liquidseparator boWl having a contracted neck and a skimming-shield Within the bowl, having a neck arranged Within the neck of the bowl, said shield having its lower portion separated from the top of the bowl by a flow-space for the skim-milk and having a passage leading from said flow-space to a HOW-space on the interior of the neck, an internal upright cream-channel, and delivery-orifices for the cream from said channel and for the skimmilk from the internal flow-space outside of said channel.

7. The combination of the body of a centrifugal liquid-separator bowl, a detachable cover, a tapering skimming-shield arranged Within the cover With its base adjacent to the joint between said body and cover, and having passages for the delivery of the light and heavy separated liquids from its small end, and a packing which bears at its inner side against the shield and at its outer side against the bowl and the cover.

8. The combination of the body of a centrifugal liquid-separator bowl, a detachable cover, a tapering skimming-shield arranged Within the cover and having passages for the delivery oi' the light and heavy separated liquids from its small end, said shield being provided at its base with a marginal flange having' notches for the passage of the heavy separated liquid, and a packing-ring which is arranged on said iiange and extends circumferentially over said notches and bears at its outer side against the joint between the body of the boWl and the cover.

fitness my hand this 23d day of March,

MATTHEW L. HOY T. Witnesses:

HARVEY FELDMEIER, .Tassin E. MERCHANT. 

